US302127A

US302127A - Presser-foot holder for sewing-machines

Info

Publication number: US302127A
Authority: US
Publication date: 1884-07-15
Anticipated expiration: 1901-07-15

Description

.127. Patented July 15, 1884.

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STATE-S EINETE ,FFIQE.

SAMUEL I-IALLIW ELL, OF NEW HAVEN, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE SACKETT MANUFACTURING COMPANY, OF

WVALLINGFORD, CONNECTICUT.

PRESSER-FOOT HOLDER FOR SEWING-MACHENES.

SPECIFICATION forming part of Letters Patent No. 302,127, dated July 15, 1884:.

Application filed December 17,1883. (No model.)

To aZZ whom it may concern.

Be it known that I, SAMUEL HALLIWELL, of New Haven, in the county of New Haven and State of Connecticut, have invented new 5 Improvements in Presser-Foot Holders for Sewing-Machines; andIdo hereby declare the following, when taken in connection with ac-- companying drawings and the letters of reference marked thereon, to be afull, clear, and I exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a perspective view of the socket; Fig. 2,a vertical central section of the socket, r showing the sleeve thereon; Fig. 3, an edge View, and Fig. 4 a front view, of the presserfoot; Fig. 5, a top View of the sleeve; Fig. 6, a transverse section through the socket and sleeve, showing. the grooves in the sleeve in line with the slot in the socket; Fig. 7, the same as Fig. 6, with the sleeve partially rotated Fig. 8, a section through the socket, showing the presser-foot and sleeve as interlocked; Figs. 9, 10, 11,12, 13, and 14, modifications. This invention relates to an improvement in the method of attaching the resser-foot to the presser-foot bar of sewing-machines, the object being to avoid screws or detachable fastenings, yet make the attachment simple and effective; 0 and the invention consists in constructing the socket part, which is to receive the presserfoot, with a transverse slot, combined with a sleeve around the socket freefor rotation,but

without longitudinal movement, the shank of I 3 5 the presser-foot constructed to pass into said slot when the sleeve is in a certain position, and so that when the shank is thus inserted the sleeve, being rotated, will engage the shank and holdit firmly in place, and as more fully hereinafter described.

A represents the lower end of the presserfoot bar, inwhich is a vertical transverse slot, a, and around the lower end of the bar is radially-projecting flange b. The shank B of the 5 presser-foot is made in thickness corresponding to the width of the slot to. It is of dovetail shape, the width at the lower end being substantially that of the diameter of the bar or socket at the slot, and so as to form a shoulder, d, at each edge, it gradually expands up- Ward, so that the upper end, 6, is broader than I the diameter of the socket through the slot.

C is the sleeve,which is arranged around the bar A, and so as to rest upon the shoulder or flange bat the bottom, yet free for rotation. 5 5 Upon its inside it corresponds in diameter at the bottom to the diameter of the bar, but eX pands toward the top, corresponding to the dovetail shape of the shank B of the presserfoot. At diametrically-opposite points,as seen in Fig. 5,vertical grooves e are made upon the inside of the sleeve, in width corresponding to the slot a in the socket. The depth of this slot is such. that the diameter on the line through the slots is a little greater than that of the width of the broad part of the shank B, and so that when turned to such a position that the grooves e coincide with the slot'a, as seen in Fig. 6, the shank B may be passed up into the slot a through the sleeve. T hen the sleeve may be turned to one side, as seen in Fig. 7, to take the grooves e away from the shank. Then the inclined sides of the sleeve will engage with the corresponding inclined edges of the shank, as seen in Fig. 8, and hold the .7 5 presser-foot in place; or the shank may be first inserted and then the sleeve moved down onto it, it being turned so that the grooves e e will coincide with the thus projecting sides of the shank.

Instead of making the slot entirely through the bar, it maybe made, as seen in Fig. 9, from one side, the shank of the presser-foot in width corresponding to the slot, but its outer edge inclined. raised, as seen in Fig. 9, and then, when the shank is properly set in the slotythe sleeve will be moved downward over the shank and then turned, as before described.

Instead of locking by means of an inclined 0 or dovetail-shaped shank'and corresponding tapering sleeve,the shank B may be of T shape, as seen in Fig. 10, the projections of the T- shaped part being greater than the diameter of the socket through the slot. In that case 5 the sleeve 0, as seen in Fig. 11, is made with a shoulder, f, corresponding to the projections of the T-shaped part, the grooves a being In that case the sleeve will first be 8 has a partial rotation and takes a hearing upon a shoulder on the socket to prevent its longitudinal movement.

I claim-- In a sewin g-niaehine, the combination of the presser-foot bar, constructed with an annular projecting flange, 11, around its lower end,and with a transverse slot, a, extending through said flange, the pressenfoot constructed with a shank corresponding to said slot, and with aprojeetion to extend outside said slot, and the sleeve 0, on said presser-foot bar, arranged to rest upon the said flange b as a bearing, and constructed upon its inside to permit the said projection on the presscr-foot shank to pass above the flange Z) and then to engage said projection by a partial rotation of the sleeve when resting on said flange b, substantially as described.

SAMUEL HALLDVELL. \Vitnesses:

Jos.. C. EARLE, J. H. SHUMW'AY.